If you’ve recently encountered problems related to dampness of your walls, you may have a fair bit of work to do if you’re keen to protect your building’s structural integrity.
The good news is that re-plastering small parts of your walls doesn’t have to require expert help. Highlighted below are the key steps to go about it.
Scrub off the old paint first. As the initial step, it is important to note that dampness is caused by salt accumulated by water (perhaps used in the previous paint) so starting a fresh is important. Brush the walls thoroughly to ensure no residue is left on the wall, avoiding contamination with pre-existing salt.
Add salt neutraliser (two coats and then wet the wall). Any holes present in the wall should then be covered or repaired. For non- porous stone it is advisable to add adhesives for the paint to stick against the wall. You should always use a trowel or metal float to smooth the surface (plasticiser), and this should be used at ratio of 1:40 renderproof against water.